69 kV KSO OCB Tripping and closing coil current
69 kV KSO OCB Tripping and closing coil current
(OP)
Hi,
The Tripping and closing coil are feeded by the battery at 125 Vdc. Do you know how many amperes and how much times is needed to open and close the breaker?
I check the manual but didn't see the answer.
Thanks
The Tripping and closing coil are feeded by the battery at 125 Vdc. Do you know how many amperes and how much times is needed to open and close the breaker?
I check the manual but didn't see the answer.
Thanks






RE: 69 kV KSO OCB Tripping and closing coil current
CR
"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]
RE: 69 kV KSO OCB Tripping and closing coil current
serial number 58135.
The mecanism is SD-19.
My question is for this specific breaker, but also for others of the same type because this question is often raised in battery calculation
RE: 69 kV KSO OCB Tripping and closing coil current
Watch out for aging type U bushings on those old oil circuit breakers. They make for an explosive combination.
RE: 69 kV KSO OCB Tripping and closing coil current
I wouldn't be surprised to see 20A through the trip cct. They're on the slow end for breakers. 3 cycles at least I would expect.
RE: 69 kV KSO OCB Tripping and closing coil current
CR
"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]